A research group led by Assistant Professor Masahiro Miyake of Kyoto University analyzed data on 9,850 Japanese people and found that those who drink coffee often have lower intraocular pressure.However, it is not known if drinking coffee will reduce intraocular pressure, and it is not recommended to take coffee for the purpose of treating or preventing glaucoma.
The Japanese are the fourth largest coffee consumers in the world after the United States, Brazil and Germany.Recent studies have shown that people who drink coffee more often are less likely to develop diabetes, cardiovascular disease, cirrhosis, some cancers and dementia, and have a lower mortality rate. Has often been found to have a positive effect on health.On the other hand, there are not many studies on the relationship between coffee and the eyes, and it is not possible to conclude whether coffee is good for the eyes.
Therefore, the research group of Assistant Professor Miyake and others focused on the relationship between coffee and "intraocular pressure," which is a risk factor for the onset and progression of glaucoma.Glaucoma is a disease that causes a lack of vision, and it is said that 40 in 20 Japanese people over the age of 1 has glaucoma.As it progresses, visual acuity also deteriorates, so it is currently the number one cause of visual impairment in Japanese.So far, there have been several reports investigating the relationship between coffee intake and glaucoma, but few studies have investigated the relationship with intraocular pressure in a large cohort.
In the study, we used the data of 0 people from the "Nagahama 9,850th Prevention Cohort Project (Nagahama Study)" jointly conducted by the Center for Genomic Medicine, Kyoto University with Nagahama City, Shiga Prefecture, to determine habitual coffee intake. The relationship with intraocular pressure was investigated.Analysis of the relationship between coffee intake frequency and intraocular pressure revealed that in people who have never been pointed out as glaucoma, it is habitual even if corrected by various factors related to intraocular pressure (age, gender, corneal thickness, etc.). It was confirmed that the higher the frequency of coffee intake, the lower the intraocular pressure.Specifically, those who drank 1 or more drinks a day had about 3 mmHg lower intraocular pressure than those who drank less than 1 drink a day.The average intraocular pressure of all participants in this study is 1 mmHg, which is about 0.4% of that.
When comparing those who had been pointed out as having glaucoma and those who had not, there was no clear difference in the frequency of coffee intake, and the relationship between coffee intake and glaucoma was unclear.Be aware that coffee is not recommended for a particular type of glaucoma, and that coffee increases the risk of low births in pregnant women.
The study showed that the higher the frequency of habitual coffee consumption, the lower the intraocular pressure, but it is not recommended to consume coffee for the purpose of preventing or treating glaucoma.There are strong expectations for clinical and experimental support in the future.
Paper information:[Ophthalmology Glaucoma] Relationship between intraocular pressure and coffee consumption in a Japanese population without glaucoma: The Nagahama study
